* {
    margin: 0px;
    padding: 0px;
    user-select: none;
}

#s_username {
    margin: 24px auto;

    text-align: center;
    font-size: 15px;
    line-height: 50px;

    text-shadow:0px 0px 5px #F76809;
}

input::-webkit-input-placeholder { /* WebKit, Blink, Edge */
    color: #c1c1c1 !important;
}

input::-moz-placeholder { /* Mozilla Firefox 4 to 18 */
    color: #c1c1c1 !important;
}

input::-moz-placeholder { /* Mozilla Firefox 19+ */
    color: #c1c1c1 !important;
}

input::-ms-input-placeholder { /* Internet Explorer 10-11 */
    color: #c1c1c1 !important;
}

input::-ms-input-placeholder { /* Microsoft Edge */
    color: #c1c1c1 !important;
}

body {
    margin: 0 auto;
    background-image: url(../img/login.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: 100%;

    text-align: center;
}

.box {
    width: 500px;
    height: 180px;
    margin: 12% auto;
    background-color: rgba(0, 0, 0, .3);
}

.box h1 {
    color: rgb(254, 197, 20);
}

input {
    width: 210px;
    outline: none;
    border: none;
    color: rgb(254, 197, 20);
    top: 0px;
    left: 0px;
    position: absolute;
    top: 10px;
    left: 32%;
    background-color: transparent;
    border-bottom: 2px solid white;
}

body .content01 {
    height: 40px;
    margin-top: 15px;
    position: relative;

}

body .content02 {
    height: 40px;
    position: relative;

}

body .iconfont {
    width: 30px;
    height: 40px;
    display: inline-block;
    font-size: 20px;
    line-height: 40px;
    color: rgb(254, 197, 20);
    position: absolute;
    top: 0px;
    left: 26%;
}

body .i2 {
    font-size: 24px;
}

button {
    height: 30px;
    width: 35%;
    border: none;
    outline: none;
    font-size: 18px;
    font-weight: bold;
    border-radius: 15px;
    animation: chara 2s 1 alternate,ani 3s infinite alternate;
    transition: 3s;
    color: rgb(216, 216, 216);
    margin-top: 10px;
}

@keyframes chara {
    0%{
        margin-top: 150px;
    }
    100%{
        margin-top: 10px;
    }
}

@keyframes ani {
    0% {
        background-color: rgb(254, 190, 48);
        box-shadow: 5px 5px 5px rgb(241, 218, 144), -5px -5px 5px rgb(239, 206, 134), 5px -5px 5px rgb(241, 215, 117), -5px 5px 5px rgb(238, 148, 86);
    }
    100% {
        background-color: rgb(153, 79, 0);
    }
}

button:hover {
    cursor: pointer;
    color: rgb(255, 194, 62);
}

button:focus {
    border: none;
    background-color: white;
}